[PATCH 3/5] tools/libs/foreignmemory: Fix PAGE_SIZE redefinition error

[Costin Lupu <costin.lupu@xxxxxxxxx>]

If PAGE_SIZE is already defined in the system (e.g. in
/usr/include/limits.h header) then gcc will trigger a redefinition error
because of -Werror. This commit also protects PAGE_SHIFT and PAGE_MASK
definitions for keeping consistency.

Signed-off-by: Costin Lupu <costin.lupu@xxxxxxxxx>
---
 tools/libs/foreignmemory/private.h | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/tools/libs/foreignmemory/private.h 
b/tools/libs/foreignmemory/private.h
index 1ee3626dd2..f3c1ba2867 100644
--- a/tools/libs/foreignmemory/private.h
+++ b/tools/libs/foreignmemory/private.h
@@ -10,11 +10,13 @@
 #include <xen/xen.h>
 #include <xen/sys/privcmd.h>
 
-#ifndef PAGE_SHIFT /* Mini-os, Yukk */
+#ifndef PAGE_SHIFT
 #define PAGE_SHIFT           12
 #endif
-#ifndef __MINIOS__ /* Yukk */
+#ifndef PAGE_SIZE
 #define PAGE_SIZE            (1UL << PAGE_SHIFT)
+#endif
+#ifndef PAGE_MASK
 #define PAGE_MASK            (~(PAGE_SIZE-1))
 #endif
 
-- 
2.20.1